; Communication System For Transmission Of Link Layer Datagram Over A Wireless Network - Patent 8094645
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Communication System For Transmission Of Link Layer Datagram Over A Wireless Network - Patent 8094645

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The present invention relates to a wireless communication system. In particular, the present invention relates to a system and a method for communication between a wireless terminal and an access point.BACKGROUND OF THE INVENTION The conventional method for facilitating communication between a wireless terminal and a destination computer over a wireless network involves using Transmission Control Protocol (TCP) (RFC 793, Defense Advanced Research Projects Agency) andInternet Protocol (IP) (RFC 791, Defense Advanced Research Projects Agency) over IEEE standard 802.11 protocol. According to this method, the remote land-based computer network associated with the destination computer has a wireless access point server(AP) to allow the destination computer to receive and transmit message data over the wireless network. The wireless terminal would typically run one or more application processes, a TCP layer, an IP layer and a 802.11 layer. The destination computertypically would run one or more application processes, a TCP layer, an IP layer and a IEEE 802.3 layer. The AP typically would run an IEEE 802.3 layer and a 802.11 layer to bridge communications between the wireless terminal and the destinationcomputer. The application process on the wireless terminal seeking to communicate with a destination process on the destination computer passes message data (eg. via HTTP) to the 802.11 layer via the TCP and IP layers. The 802.11 layer on the wirelessterminal then transmits the message data to the 802.11 layer on the AP over the wireless network. Upon receipt of the message data, the 802.11 layer on the AP passes the message data to the 802.3 layer on the AP for retransmission over the land-basedcomputer network. The 802.3 layer on the destination computer passes the message data to the TCP layer (via the IP layer) on the destination computer to verify that the message data was properly received. If the message data was properly received, the TCP layer on the dest

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